import { jsonRPC } from '../../../../static/js/jsonrpc'
import { tagsCard } from '../../../../static/js/tags'
import {
    animate,
    advancedSearchAndAddTestCases,
    bindDeleteCommentButton, changeDropdownSelectedItem,
    markdown2HTML, renderCommentsForObject, renderCommentHTML,
    treeViewBind, quickSearchAndAddTestCase
} from '../../../../static/js/utils'
import { initSimpleMDE } from '../../../../static/js/simplemde_security_override'

const expandedTestCaseIds = []
const fadeAnimationTime = 500

const allTestCases = {}
const autocompleteCache = {}

const confirmedStatuses = []

export function pageTestplansGetReadyHandler () {
    const testPlanDataElement = $('#test_plan_pk')
    const testPlanId = testPlanDataElement.data('testplan-pk')

    const permissions = {
        'perm-change-testcase': testPlanDataElement.data('perm-change-testcase') === 'True',
        'perm-remove-testcase': testPlanDataElement.data('perm-remove-testcase') === 'True',
        'perm-add-testcase': testPlanDataElement.data('perm-add-testcase') === 'True',
        'perm-add-comment': testPlanDataElement.data('perm-add-comment') === 'True',
        'perm-delete-comment': testPlanDataElement.data('perm-delete-comment') === 'True'
    }

    // bind everything in tags table
    const permRemoveTag = testPlanDataElement.data('perm-remove-tag') === 'True'
    tagsCard('TestPlan', testPlanId, { plan: testPlanId }, permRemoveTag)

    jsonRPC('TestCaseStatus.filter', { is_confirmed: true }, function (statuses) {
    // save for later use
        for (let i = 0; i < statuses.length; i++) {
            confirmedStatuses.push(statuses[i].id)
        }

        jsonRPC('TestCase.sortkeys', { plan: testPlanId }, function (sortkeys) {
            jsonRPC('TestCase.filter', { plan: testPlanId }, function (data) {
                for (let i = 0; i < data.length; i++) {
                    const testCase = data[i]

                    testCase.sortkey = sortkeys[testCase.id]
                    allTestCases[testCase.id] = testCase
                }
                sortTestCases(Object.values(allTestCases), testPlanId, permissions, 'sortkey')

                // drag & reorder needs the initial order of test cases and
                // they may not be fully loaded when sortable() is initialized!
                toolbarEvents(testPlanId, permissions)
            })
        })
    })

    adjustTestPlanFamilyTree()
    collapseDocumentText()
    quickSearchAndAddTestCase(testPlanId, addTestCaseToPlan, autocompleteCache)
    $('#btn-search-cases').click(function () {
        return advancedSearchAndAddTestCases(
            testPlanId, 'TestPlan.add_case', $(this).attr('href'),
            $('#test_plan_pk').data('trans-error-adding-cases')
        )
    })
}

function addTestCaseToPlan (planId) {
    const caseName = $('#search-testcase')[0].value
    const testCase = autocompleteCache[caseName]

    // test case is already present so don't add it
    if (allTestCases[testCase.id]) {
        $('#search-testcase').val('')
        return false
    }

    jsonRPC('TestPlan.add_case', [planId, testCase.id], function (result) {
    // IMPORTANT: the API result includes a 'sortkey' field value!
        window.location.reload(true)

        // TODO: remove the page reload above and add the new case to the list
        // NB: pay attention to drawTestCases() & treeViewBind()
        // NB: also add to allTestCases !!!

        $('#search-testcase').val('')
    })
}

function collapseDocumentText () {
    // for some reason .height() reports a much higher value than
    // reality and the 59% reduction seems to work nicely
    const infoCardHeight = 0.59 * $('#testplan-info').height()

    if ($('#testplan-text').height() > infoCardHeight) {
        $('#testplan-text-collapse-btn').removeClass('hidden')

        $('#testplan-text').css('min-height', infoCardHeight)
        $('#testplan-text').css('height', infoCardHeight)
        $('#testplan-text').css('overflow', 'hidden')

        $('#testplan-text').on('hidden.bs.collapse', function () {
            $('#testplan-text').removeClass('collapse').css({
                height: infoCardHeight
            })
        })
    }
}

function adjustTestPlanFamilyTree () {
    treeViewBind('#test-plan-family-tree')

    // remove the > arrows from elements which don't have children
    $('#test-plan-family-tree').find('.list-group-item-container').each(function (index, element) {
        if (!element.innerHTML.trim()) {
            const span = $(element).siblings('.list-group-item-header').find('.list-view-pf-left span')

            span.removeClass('fa-angle-right')
            // this is the exact same width so rows are still aligned
            span.attr('style', 'width:9px')
        }
    })

    // expand all parent elements so that the current one is visible
    $('#test-plan-family-tree').find('.list-group-item.active').each(function (index, element) {
        $(element).parents('.list-group-item-container').each(function (idx, container) {
            $(container).toggleClass('hidden')
        })
    })
}

function drawTestCases (testCases, testPlanId, permissions) {
    const container = $('#testcases-list')
    const noCasesTemplate = $('#no_test_cases')
    const testCaseRowDocumentFragment = $('#test_case_row')[0].content

    if (testCases.length > 0) {
        testCases.forEach(function (element) {
            container.append(getTestCaseRowContent(testCaseRowDocumentFragment.cloneNode(true), element, permissions))
        })
        attachEvents(testPlanId, permissions)
    } else {
        container.append(noCasesTemplate[0].innerHTML)
    }
}

function redrawSingleRow (testCaseId, testPlanId, permissions) {
    const testCaseRowDocumentFragment = $('#test_case_row')[0].content
    const newRow = getTestCaseRowContent(testCaseRowDocumentFragment.cloneNode(true), allTestCases[testCaseId], permissions)

    // remove from expanded list b/c the comment section may have changed
    delete expandedTestCaseIds[expandedTestCaseIds.indexOf(testCaseId)]

    // replace the element in the dom
    $(`[data-testcase-pk=${testCaseId}]`).replaceWith(newRow)
    attachEvents(testPlanId, permissions)
}

function getTestCaseRowContent (rowContent, testCase, permissions) {
    const row = $(rowContent)

    row[0].firstElementChild.dataset.testcasePk = testCase.id
    row.find('.js-test-case-link').html(`TC-${testCase.id}: ${testCase.summary}`).attr('href', `/case/${testCase.id}/`)
    // todo: TestCaseStatus here isn't translated b/c TestCase.filter uses a
    // custom serializer which needs to be refactored as well
    row.find('.js-test-case-status').html(`${testCase.case_status__name}`)
    row.find('.js-test-case-priority').html(`${testCase.priority__value}`)
    row.find('.js-test-case-category').html(`${testCase.category__name}`)
    row.find('.js-test-case-author').html(`${testCase.author__username}`)
    row.find('.js-test-case-tester').html(`${testCase.default_tester__username || '-'}`)
    row.find('.js-test-case-reviewer').html(`${testCase.reviewer__username || '-'}`)

    // set the links in the kebab menu
    if (permissions['perm-change-testcase']) {
        row.find('.js-test-case-menu-edit')[0].href = `/case/${testCase.id}/edit/`
    }

    if (permissions['perm-add-testcase']) {
        row.find('.js-test-case-menu-clone')[0].href = `/cases/clone/?c=${testCase.id}`
    }

    // apply visual separation between confirmed and not confirmed

    if (!isTestCaseConfirmed(testCase.case_status)) {
        row.find('.list-group-item-header').addClass('bg-danger')

        // add customizable icon as part of #1932
        row.find('.js-test-case-status-icon').addClass('fa-times')

        row.find('.js-test-case-tester-div').toggleClass('hidden')
        row.find('.js-test-case-reviewer-div').toggleClass('hidden')
    } else {
        row.find('.js-test-case-status-icon').addClass('fa-check-square')
    }

    // handle automated icon
    const automationIndicationElement = row.find('.js-test-case-automated')
    let automatedClassToRemove = 'fa-cog'

    if (testCase.is_automated) {
        automatedClassToRemove = 'fa-hand-paper-o'
    }

    automationIndicationElement.parent().attr(
        'title',
        automationIndicationElement.data(testCase.is_automated.toString())
    )
    automationIndicationElement.removeClass(automatedClassToRemove)

    // produce unique IDs for comments textarea and file upload fields
    row.find('textarea')[0].id = `comment-for-testcase-${testCase.id}`
    row.find('input[type="file"]')[0].id = `file-upload-for-testcase-${testCase.id}`

    return row
}

function getTestCaseExpandArea (row, testCase, permissions) {
    markdown2HTML(testCase.text, row.find('.js-test-case-expand-text'))
    if (testCase.notes.trim().length > 0) {
        row.find('.js-test-case-expand-notes').html(testCase.notes)
    }

    // draw the attachments
    const uniqueDivCustomId = `js-tc-id-${testCase.id}-attachments`
    // set unique identifier so we know where to draw fetched data
    row.find('.js-test-case-expand-attachments').parent()[0].id = uniqueDivCustomId

    jsonRPC('TestCase.list_attachments', [testCase.id], function (data) {
    // cannot use instance of row in the callback
        const ulElement = $(`#${uniqueDivCustomId} .js-test-case-expand-attachments`)

        if (data.length === 0) {
            ulElement.children().removeClass('hidden')
            return
        }

        const liElementFragment = $('#attachments-list-item')[0].content

        for (let i = 0; i < data.length; i++) {
            // should create new element for every attachment
            const liElement = liElementFragment.cloneNode(true)
            const attachmentLink = $(liElement).find('a')[0]

            attachmentLink.href = data[i].url
            attachmentLink.innerText = data[i].url.split('/').slice(-1)[0]
            ulElement.append(liElement)
        }
    })

    // load components
    const componentTemplate = row.find('.js-testcase-expand-components').find('template')[0].content
    jsonRPC('Component.filter', { cases: testCase.id }, function (result) {
        result.forEach(function (element) {
            const newComponent = componentTemplate.cloneNode(true)
            $(newComponent).find('span').html(element.name)
            row.find('.js-testcase-expand-components').append(newComponent)
        })
    })

    // load tags
    const tagTemplate = row.find('.js-testcase-expand-tags').find('template')[0].content
    jsonRPC('Tag.filter', { case: testCase.id }, function (result) {
        const uniqueTags = []

        result.forEach(function (element) {
            if (uniqueTags.indexOf(element.name) === -1) {
                uniqueTags.push(element.name)

                const newTag = tagTemplate.cloneNode(true)
                $(newTag).find('span').html(element.name)
                row.find('.js-testcase-expand-tags').append(newTag)
            }
        })
    })

    // render previous comments
    renderCommentsForObject(
        testCase.id,
        'TestCase.comments',
        'TestCase.remove_comment',
        !isTestCaseConfirmed(testCase.case_status) && permissions['perm-delete-comment'],
        row.find('.comments')
    )

    // render comments form
    const commentFormTextArea = row.find('.js-comment-form-textarea')
    if (!isTestCaseConfirmed(testCase.case_status) && permissions['perm-add-comment']) {
        const textArea = row.find('textarea')[0]
        const fileUpload = row.find('input[type="file"]')
        const editor = initSimpleMDE(textArea, $(fileUpload), textArea.id)

        row.find('.js-post-comment').click(function (event) {
            event.preventDefault()
            const input = editor.value().trim()

            if (input) {
                jsonRPC('TestCase.add_comment', [testCase.id, input], comment => {
                    editor.value('')

                    // show the newly added comment and bind its delete button
                    row.find('.comments').append(
                        renderCommentHTML(
                            1 + row.find('.js-comment-container').length,
                            comment,
                            $('template#comment-template')[0],
                            function (parentNode) {
                                bindDeleteCommentButton(
                                    testCase.id,
                                    'TestCase.remove_comment',
                                    permissions['perm-delete-comment'], // b/c we already know it's unconfirmed
                                    parentNode)
                            })
                    )
                })
            }
        })
    } else {
        commentFormTextArea.hide()
    }
}

function attachEvents (testPlanId, permissions) {
    treeViewBind('#testcases-list')

    if (permissions['perm-change-testcase']) {
    // update default tester
        $('.js-test-case-menu-tester').click(function (ev) {
            $(this).parents('.dropdown').toggleClass('open')

            const emailOrUsername = window.prompt($('#test_plan_pk').data('trans-username-email-prompt'))
            if (!emailOrUsername) {
                return false
            }

            updateTestCasesViaAPI([getCaseIdFromEvent(ev)], { default_tester: emailOrUsername },
                testPlanId, permissions)

            return false
        })

        $('.js-test-case-menu-priority').click(function (ev) {
            $(this).parents('.dropdown').toggleClass('open')

            updateTestCasesViaAPI([getCaseIdFromEvent(ev)], { priority: ev.target.dataset.id },
                testPlanId, permissions)
            return false
        })

        $('.js-test-case-menu-status').click(function (ev) {
            $(this).parents('.dropdown').toggleClass('open')
            const testCaseId = getCaseIdFromEvent(ev)
            updateTestCasesViaAPI([testCaseId], { case_status: ev.target.dataset.id },
                testPlanId, permissions)
            return false
        })
    }

    if (permissions['perm-remove-testcase']) {
    // delete testcase from the plan
        $('.js-test-case-menu-delete').click(function (ev) {
            $(this).parents('.dropdown').toggleClass('open')
            const testCaseId = getCaseIdFromEvent(ev)

            jsonRPC('TestPlan.remove_case', [testPlanId, testCaseId], function () {
                delete allTestCases[testCaseId]

                // fadeOut the row then remove it from the dom, if we remove it directly the user may not see the change
                $(ev.target).closest(`[data-testcase-pk=${testCaseId}]`).fadeOut(fadeAnimationTime, function () {
                    $(this).remove()
                })
            })

            return false
        })
    }

    // get details and draw expand area only on expand
    $('.js-testcase-row').click(function (ev) {
    // don't trigger row expansion when kebab menu is clicked
        if ($(ev.target).is('button, a, input, .fa-ellipsis-v')) {
            return
        }

        const testCaseId = getCaseIdFromEvent(ev)

        // tc was expanded once, dom is ready
        if (expandedTestCaseIds.indexOf(testCaseId) > -1) {
            return
        }

        const tcRow = $(ev.target).closest(`[data-testcase-pk=${testCaseId}]`)
        expandedTestCaseIds.push(testCaseId)
        getTestCaseExpandArea(tcRow, allTestCases[testCaseId], permissions)
    })

    const inputs = $('.js-testcase-row').find('input')
    inputs.click(function (ev) {
    // stop trigerring row.click()
        ev.stopPropagation()
        const checkbox = $('.js-checkbox-toolbar')[0]

        inputs.each(function (index, tc) {
            checkbox.checked = tc.checked

            if (!checkbox.checked) {
                return false
            }
        })
    })

    function getCaseIdFromEvent (ev) {
        return $(ev.target).closest('.js-testcase-row').data('testcase-pk')
    }
}

function updateTestCasesViaAPI (testCaseIds, updateQuery, testPlanId, permissions) {
    testCaseIds.forEach(function (caseId) {
        jsonRPC('TestCase.update', [caseId, updateQuery], function (updatedTC) {
            const testCaseRow = $(`.js-testcase-row[data-testcase-pk=${caseId}]`)

            // update internal data
            const sortkey = allTestCases[caseId].sortkey
            allTestCases[caseId] = updatedTC
            // note: updatedTC doesn't have sortkey information
            allTestCases[caseId].sortkey = sortkey

            animate(testCaseRow, function () {
                redrawSingleRow(caseId, testPlanId, permissions)
            })
        })
    })
}

function toolbarEvents (testPlanId, permissions) {
    $('.js-checkbox-toolbar').click(function (ev) {
        const isChecked = ev.target.checked
        const testCaseRows = $('.js-testcase-row').find('input')

        testCaseRows.each(function (index, tc) {
            tc.checked = isChecked
        })
    })

    $('.js-toolbar-filter-options li').click(function (ev) {
        return changeDropdownSelectedItem(
            '.js-toolbar-filter-options',
            '#input-filter-button',
            ev.target,
            $('#toolbar-filter')
        )
    })

    $('#toolbar-filter').on('keyup', function () {
        const filterValue = $(this).val().toLowerCase()
        const filterBy = $('.js-toolbar-filter-options .selected')[0].dataset.filterType

        filterTestCasesByProperty(
            testPlanId,
            Object.values(allTestCases),
            filterBy,
            filterValue
        )
    })

    $('.js-toolbar-sort-options li').click(function (ev) {
        changeDropdownSelectedItem('.js-toolbar-sort-options', '#sort-button', ev.target)

        sortTestCases(Object.values(allTestCases), testPlanId, permissions)
        return false
    })

    // handle asc desc icon
    $('.js-toolbar-sorting-order > span').click(function (ev) {
        const icon = $(this)

        icon.siblings('.hidden').removeClass('hidden')
        icon.addClass('hidden')

        sortTestCases(Object.values(allTestCases), testPlanId, permissions)
    })

    // always initialize the sortable list however you can only
    // move items using the handle icon on the left which becomes
    // visible only when the manual sorting button is clicked
    sortable('#testcases-list', {
        handle: '.handle',
        itemSerializer: (serializedItem, sortableContainer) => {
            return parseInt(serializedItem.node.getAttribute('data-testcase-pk'))
        }
    })

    // IMPORTANT: this is not empty b/c sortable() is initialized *after*
    // all of the test cases have been rendered !!!
    const initialOrder = sortable('#testcases-list', 'serialize')[0].items

    $('.js-toolbar-manual-sort').click(function (event) {
        $(this).blur()
        $('.js-toolbar-manual-sort').find('span').toggleClass(['fa-sort', 'fa-check-square'])
        $('.js-testcase-sort-handler, .js-testcase-expand-arrow, .js-testcase-checkbox').toggleClass('hidden')

        const currentOrder = sortable('#testcases-list', 'serialize')[0].items

        // rows have been rearranged and the results must be committed to the DB
        if (currentOrder.join() !== initialOrder.join()) {
            currentOrder.forEach(function (tcPk, index) {
                jsonRPC('TestPlan.update_case_order', [testPlanId, tcPk, index * 10], function (result) {})
            })
        }
    })

    $('.js-toolbar-priority').click(function (ev) {
        $(this).parents('.dropdown').toggleClass('open')
        const selectedCases = getSelectedTestCases()

        if (!selectedCases.length) {
            alert($('#test_plan_pk').data('trans-no-testcases-selected'))
            return false
        }

        updateTestCasesViaAPI(selectedCases, { priority: ev.target.dataset.id },
            testPlanId, permissions)

        return false
    })

    $('.js-toolbar-status').click(function (ev) {
        $(this).parents('.dropdown').toggleClass('open')
        const selectedCases = getSelectedTestCases()

        if (!selectedCases.length) {
            alert($('#test_plan_pk').data('trans-no-testcases-selected'))
            return false
        }

        updateTestCasesViaAPI(selectedCases, { case_status: ev.target.dataset.id },
            testPlanId, permissions)
        return false
    })

    $('#default-tester-button').click(function (ev) {
        $(this).parents('.dropdown').toggleClass('open')
        const selectedCases = getSelectedTestCases()

        if (!selectedCases.length) {
            alert($('#test_plan_pk').data('trans-no-testcases-selected'))
            return false
        }

        const emailOrUsername = window.prompt($('#test_plan_pk').data('trans-username-email-prompt'))

        if (!emailOrUsername) {
            return false
        }

        updateTestCasesViaAPI(selectedCases, { default_tester: emailOrUsername },
            testPlanId, permissions)

        return false
    })

    $('#bulk-reviewer-button').click(function (ev) {
        $(this).parents('.dropdown').toggleClass('open')
        const selectedCases = getSelectedTestCases()

        if (!selectedCases.length) {
            alert($('#test_plan_pk').data('trans-no-testcases-selected'))
            return false
        }

        const emailOrUsername = window.prompt($('#test_plan_pk').data('trans-username-email-prompt'))

        if (!emailOrUsername) {
            return false
        }

        updateTestCasesViaAPI(selectedCases, { reviewer: emailOrUsername },
            testPlanId, permissions)

        return false
    })

    $('#delete_button').click(function (ev) {
        $(this).parents('.dropdown').toggleClass('open')
        const selectedCases = getSelectedTestCases()

        if (!selectedCases.length) {
            alert($('#test_plan_pk').data('trans-no-testcases-selected'))
            return false
        }

        const areYouSureText = $('#test_plan_pk').data('trans-are-you-sure')
        if (confirm(areYouSureText)) {
            for (let i = 0; i < selectedCases.length; i++) {
                const testCaseId = selectedCases[i]
                jsonRPC('TestPlan.remove_case', [testPlanId, testCaseId], function () {
                    delete allTestCases[testCaseId]

                    // fadeOut the row then remove it from the dom, if we remove it directly the user may not see the change
                    $(`[data-testcase-pk=${testCaseId}]`).fadeOut(fadeAnimationTime, function () {
                        $(this).remove()
                    })
                })
            }
        }

        return false
    })

    $('#bulk-clone-button').click(function () {
        $(this).parents('.dropdown').toggleClass('open')
        const selectedCases = getSelectedTestCases()

        if (!selectedCases.length) {
            alert($('#test_plan_pk').data('trans-no-testcases-selected'))
            return false
        }

        window.location.assign(`/cases/clone?c=${selectedCases.join('&c=')}`)
    })

    $('#testplan-toolbar-newrun').click(function () {
        $(this).parents('.dropdown').toggleClass('open')
        const selectedTestCases = getSelectedTestCases()

        if (!selectedTestCases.length) {
            alert($('#test_plan_pk').data('trans-no-testcases-selected'))
            return false
        }

        for (let i = 0; i < selectedTestCases.length; i++) {
            const status = allTestCases[selectedTestCases[i]].case_status
            if (!isTestCaseConfirmed(status)) {
                alert($('#test_plan_pk').data('trans-cannot-create-testrun'))
                return false
            }
        }

        const newTestRunUrl = $('#test_plan_pk').data('new-testrun-url')
        window.location.assign(`${newTestRunUrl}?c=${selectedTestCases.join('&c=')}`)
        return false
    })
}

function isTestCaseConfirmed (status) {
    return confirmedStatuses.indexOf(Number(status)) > -1
}

function sortTestCases (testCases, testPlanId, permissions, defaultSortBy = undefined) {
    const sortBy = defaultSortBy || $('.js-toolbar-sort-options .selected')[0].dataset.filterType
    const sortOrder = $('.js-toolbar-sorting-order > span:not(.hidden)').data('order')

    $('#testcases-list').html('')

    testCases.sort(function (tc1, tc2) {
        const value1 = tc1[sortBy] || ''
        const value2 = tc2[sortBy] || ''

        if (Number.isInteger(value1) && Number.isInteger(value2)) {
            return (value1 - value2) * sortOrder
        }

        return value1.toString().localeCompare(value2.toString()) * sortOrder
    })

    // put the new order in the DOM
    drawTestCases(testCases, testPlanId, permissions)
}

// todo check selectedCheckboxes function in testrun/get.js
function getSelectedTestCases () {
    const inputs = $('.js-testcase-row input:checked')
    const tcIds = []

    inputs.each(function (index, el) {
        const elJq = $(el)

        if (elJq.is(':hidden')) {
            return
        }

        const id = elJq.closest('.js-testcase-row').data('testcase-pk')
        tcIds.push(id)
    })

    return tcIds
}

function filterTestCasesByProperty (planId, testCases, filterBy, filterValue) {
    // no input => show all rows
    if (filterValue.trim().length === 0) {
        $('.js-testcase-row').show()
        return
    }

    $('.js-testcase-row').hide()
    if (filterBy === 'component' || filterBy === 'tag') {
        const query = { plan: planId }
        query[`${filterBy}__name__icontains`] = filterValue

        jsonRPC('TestCase.filter', query, function (filtered) {
            // hide again if a previous async request showed something else
            $('.js-testcase-row').hide()
            filtered.forEach(tc => $(`[data-testcase-pk=${tc.id}]`).show())
        })
    } else {
        testCases.filter(function (tc) {
            return (tc[filterBy] && tc[filterBy].toString().toLowerCase().indexOf(filterValue) > -1)
        }).forEach(tc => $(`[data-testcase-pk=${tc.id}]`).show())
    }
}
